/Engine/Source/Runtime/AssetRegistry/Public/AssetRegistry/IAssetRegistry.h
Sets the PrimaryAssetId for a specific asset. This should only be called by the AssetManager, and is needed when the AssetManager is more up to date than the on disk Registry
bool SetPrimaryAssetIdForObjectPath ( const [FName](API\Runtime\Core\UObject\FName) ObjectPath, [FPrimaryAssetId](API\Runtime\CoreUObject\UObject\FPrimaryAssetId) PrimaryAssetId )